try and factor-out build deps and cppcheck run

.github/workflows/build.yml

@@ -18,6 +18,46 @@ env:
   CFLAGS: -g -O2 -Werror=pointer-arith -Werror=implicit-function-declaration
   JOBS: 2
   DEBUG: 1
+  LIBRARY_DEPS: |
+    libatk1.0-dev
+    libcairo2-dev
+    libdconf-dev
+    libgirepository1.0-dev
+    libglib2.0-dev
+    libgtk-3-dev
+    libgtk-layer-shell-dev
+    libice-dev
+    libmate-desktop-dev
+    libmate-menu-dev
+    libmateweather-dev
+    libpango1.0-dev
+    libsm-dev
+    libsoup2.4-dev
+    libwnck-3-dev
+    libx11-dev
+    libxrandr-dev
+    libgirepository1.0-dev
+  BUILD_DEPS: |
+    ccache
+    autoconf-archive
+    autopoint
+    cppcheck
+    gir1.2-freedesktop
+    git
+    gobject-introspection
+    gtk-doc-tools
+    lsb-release
+    make
+    mate-common
+    meson
+    yelp-tools
+    iso-codes
+    gobject-introspection
+    ${{env.LIBRARY_DEPS}}
+  SCAN_BUILD_DEPS: |
+    clang
+    clang-tools
+    ${{env.BUILD_DEPS}}
 
 jobs:
   build:
@@ -56,41 +96,7 @@ jobs:
         run: |
           sudo apt-get update -qq
           sudo apt-get install --assume-yes --no-install-recommends \
-            ccache \
-            autoconf-archive \
-            autopoint \
-            clang \
-            clang-tools \
-            cppcheck \
-            gir1.2-freedesktop \
-            git \
-            gobject-introspection \
-            gtk-doc-tools \
-            libatk1.0-dev \
-            libcairo2-dev \
-            libdconf-dev \
-            libgirepository1.0-dev \
-            libglib2.0-dev \
-            libgtk-3-dev \
-            libgtk-layer-shell-dev \
-            libice-dev \
-            libmate-desktop-dev \
-            libmate-menu-dev \
-            libmateweather-dev \
-            libpango1.0-dev \
-            libsm-dev \
-            libsoup2.4-dev \
-            libwnck-3-dev \
-            libx11-dev \
-            libxrandr-dev \
-            lsb-release \
-            make \
-            mate-common \
-            meson \
-            yelp-tools \
-            iso-codes \
-            gobject-introspection \
-            libgirepository1.0-dev
+            ${BUILD_DEPS}
 
       - name: ccache
         uses: hendrikmuhs/[email protected]
@@ -122,5 +128,20 @@ jobs:
       - name: Run distcheck
         run: make -C mate-panel -j ${{ env.JOBS }} distcheck
 
+  cppcheck:
+    name: Run cppcheck
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update -qq
+          sudo apt-get install --assume-yes --no-install-recommends \
+            ${LIBRARY_DEPS}
+
       - name: cppcheck
-        run: cppcheck --enable=warning,style,performance,portability,information,missingInclude -i'gtk-layer-shell-build' mate-panel
+        run: cppcheck --enable=warning,style,performance,portability,information,missingInclude -i'gtk-layer-shell-build' .